Patch "drm/amdgpu: fix incorrect number of active RBs for gfx11" has been added to the 6.6-stable tree

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This is a note to let you know that I've just added the patch titled

    drm/amdgpu: fix incorrect number of active RBs for gfx11

to the 6.6-stable tree which can be found at:
    http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary

The filename of the patch is:
     drm-amdgpu-fix-incorrect-number-of-active-rbs-for-gfx11.patch
and it can be found in the queue-6.6 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.


>From bbca7f414ae9a12ea231cdbafd79c607e3337ea8 Mon Sep 17 00:00:00 2001
From: Tim Huang <Tim.Huang@xxxxxxx>
Date: Wed, 3 Apr 2024 17:28:44 +0800
Subject: drm/amdgpu: fix incorrect number of active RBs for gfx11

From: Tim Huang <Tim.Huang@xxxxxxx>

commit bbca7f414ae9a12ea231cdbafd79c607e3337ea8 upstream.

The RB bitmap should be global active RB bitmap &
active RB bitmap based on active SA.

Signed-off-by: Tim Huang <Tim.Huang@xxxxxxx>
Reviewed-by: Yifan Zhang <yifan1.zhang@xxxxxxx>
Signed-off-by: Alex Deucher <alexander.deucher@xxxxxxx>
Cc: stable@xxxxxxxxxxxxxxx
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
 drivers/gpu/drm/amd/amdgpu/gfx_v11_0.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/drivers/gpu/drm/amd/amdgpu/gfx_v11_0.c
+++ b/drivers/gpu/drm/amd/amdgpu/gfx_v11_0.c
@@ -1616,7 +1616,7 @@ static void gfx_v11_0_setup_rb(struct am
 			active_rb_bitmap |= (0x3 << (i * rb_bitmap_width_per_sa));
 	}
 
-	active_rb_bitmap |= global_active_rb_bitmap;
+	active_rb_bitmap &= global_active_rb_bitmap;
 	adev->gfx.config.backend_enable_mask = active_rb_bitmap;
 	adev->gfx.config.num_rbs = hweight32(active_rb_bitmap);
 }


Patches currently in stable-queue which might be from Tim.Huang@xxxxxxx are

queue-6.6/drm-amdgpu-fix-incorrect-number-of-active-rbs-for-gfx11.patch
queue-6.6/drm-amd-pm-fixes-a-random-hang-in-s4-for-smu-v13.0.4-11.patch




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